caa a22 4500 469059257 CHVBK 20180323132852.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF01053870 doi (NATIONALLICENCE)springer-10.1007/BF01053870 The crystal structure of dibenzo-14-crown-4, a preorganized basis of square pyramid coordination for lithium ions [Elektronische Daten] [N. Dalley, Weiming Jiang, Uriel Olsher] Dibenzo-14-crown-4 (DB14C4) has a high selectivity for Li+. The rigidity of the molecule caused by the two benzene rings suggests that this is a preorganized ligand for metal ions and particularly for Li+. A single crystal structure study of the molecule was performed. The crystal data are: space groupP21,a = 12.811(2),b = 5.106(1),c = 12.816(3)Å,β = 115.44(1)°,V = 757.0(2)Å3 withZ = 2. The structure was refined toR = 0.049 andR w, = 0.058 using 1804 unique data withF < 4σ(F). The conformation of the free ligand was found to be similar to that of the complexed ligand and the conformational parameters of the free ligand and its derivatives are compared to Li+ complexes of the ligand and its derivatives. Kluwer Academic Publishers, 1992 X-ray crystal structure nationallicence Dbenzo-14-crown-4 nationallicence preorganized ligand nationallicence Li+ binding nationallicence Dalley N. Department of Chemistry, Brigham Young University, 84602, Provo, Utah, USA aut Jiang Weiming Department of Chemistry, Brigham Young University, 84602, Provo, Utah, USA aut Olsher Uriel Department of Chemical Services, The Weizmann Institute of Science, 76100, Rehovot, Israel aut Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 12/1-4(1992-01-01), 305-312 0923-0750 12:1-4<305 1992 12 10847 https://doi.org/10.1007/BF01053870 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01053870 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dalley N. Department of Chemistry, Brigham Young University, 84602, Provo, Utah, USA aut NATIONALLICENCE 700 1- Jiang Weiming Department of Chemistry, Brigham Young University, 84602, Provo, Utah, USA aut NATIONALLICENCE 700 1- Olsher Uriel Department of Chemical Services, The Weizmann Institute of Science, 76100, Rehovot, Israel aut NATIONALLICENCE 773 0- Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 12/1-4(1992-01-01), 305-312 0923-0750 12:1-4<305 1992 12 10847 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer